The Suicide Squad a.k.a. Task Force X is an antihero team of incarcerated supervillains.
So here is my dream suicide squad -
1. Krona (DC Comics)
Krona is an Oan scientist who became obsessed with observing the origins of the universe itself, despite an ancient legend that said discovering that secret would cause a great calamity. Krona constructs a machine that pierces the temporal barrier and views the beginnings of time itself. Krona catches a glimpse of the hand of creation depositing the speck that would become the entire cosmos. His machine explodes at that instant, and the universe is shattered causing the creation of the Multiverse as the universe replicates into an infinite number of parallel universes. At this same moment, the Anti-Matter Universe is created, unleashing evil into the cosmos; thus, the Monitor and the Anti-Monitor are born. As punishment for this act, Krona is transformed into pure energy by his fellow Oans and is sent to forever wander the cosmos.
2. Surtur (Marvel Comics)
Surtur is a fire demon native to the extradimensional plane of Muspelheim land of the fire demons, one of the nine worlds in Norse mythology. Surtur was depicted as an immense and malevolent elemental fire demon whose power was of apocalyptic proportions. Standing over 1,000 ft. in height, Surtur possessed strength and durability by far surpassing that of Thor; the ability to generate intense heat, flames or concussive force, molecular manipulation such as transforming his fingers into serpents, levitation and inter-dimensional travel. Surtur's scale of power is usually shown to equal that of Odin. He is a skilled warrior and swordsman, and has a prehensile tail. He possesses a great intellect, and has vast knowledge of ancient and arcane wisdom. He is vulnerable to intense cold, and can be imprisoned by certain magical spells or by other beings wielding cosmic energy powers equaling his own.
3. Darkseid (DC Comics)
The son of King Yuga Khan and Queen Heggra, Prince Uxas, second in line to the throne of Apokolips (Apocalypse), plotted to seize power over the planet. When his brother, Drax, attempted to claim the fabled Omega Force, Uxas murdered him, and he took the power for himself which as a result transfored him into a rock-like creature, and taking a new name: Darkseid. Darkseid is among the most powerful of the New Gods and of characters in the DC universe. His main power, the Omega Beams, is a form of energy that he fires from his eyes or hands as either a concussive force or a disintegrating energy which is capable of erasing living objects and organisms from existence.
4. Thanos (Marvel Comics)
Thanos was born on Saturn's moon Titan, and is the child of Eternals Mentor and Sui-San. Thanos was carrying the Deviants gene, and as such shared the physical appearance of the Eternals' cousin race. At birth, his mother attempted to kill him. During his school years, Thanos was a pacifist and would only play with his brother Eros (Starfox) and pets. By adolescence, Thanos had become fascinated with nihilism and death, worshiping and eventually falling in love with the physical embodiment of death, Mistress Death. As an adult, Thanos attempts to create a new life for himself by starting a family. He is visited again by Mistress Death, for whom he murders his family. Thanos is a mutant member of the race of superhumans known as the Titanian Eternals. The character possesses abilities common to the Eternals, but amplified to a higher degree through a combination of his mutant Eternal heritage, bionic amplification, mysticism, and power bestowed by the abstract entity, Death. Demonstrating enormous superhuman strength, stamina, and durability, Thanos can absorb and project vast quantities of cosmic energy and is capable of telekinesis, telepathy and matter manipulation. Thanos is an accomplished hand-to-hand combatant, having been trained in the art of war on Titan.
If these villains form a team then they are invincible, not even the Justice League and the Avenegers combined could defeat them, but wait the Suicide Squad is supposed to be following Amanda Waller's orders or they just go BOOM !